Gamma-Aminobutyric Acid → HCID 54193138, compound

Participants

Reaction Steps

2-Chloro-5-(cis-3,5-dimethylpiperidinosulfonyl)benzoyl chloride (1.75 g.) is added to a solution of 4-aminobutyric acid (0.54 g.) in water (30 ml.), acetone (30 ml.) and 1 N sodium hydroxide (10 ml.). After stirring at room temperature for a half hour, the acetone is removed by evaporation, and the aqueous solution is acidified with concentrated hydrochloric acid. The precipitate is dissolved in 50 ml. of hot acetone-methanol (1:1) and concentrated to half volume. Hexane is added to crystallize the product, m.p. 193-°195° C.

Provenance & Evidence